Knowledge needed

[Alreetmiowdmuka]

Hi just thought I d ask for some advice cause tgeirs always someone in the know on thus forum.
So I bought thus dinghy last year

I've used it a couple of times with lads island hoping in the lake dustrict it's actually quite a robust peice of kit n been perfect for little half mike paddles with kit.my problem is that it's impossible too paddle row boat style with the paddles through the oar holes on the sides.the dinghy just spins round and round in circles.so far we've been paddling as you would with a Canadian canoe one at the front and one at the back.what I'm thinking is if a attach a fin too the bottom(not sure of correct terminology)this will help keep it in a straight line.?if this is correct where would I position this Fin in the middle or at the back?
Cheers Andy

 

[Alreetmiowdmuka]

Ps if it helps thus is just a pure play vessel I'm not after breaking any records here ha!

 

[andibs]

Might be easier just to get a second hand cheap kayak paddle

Andy

 

[Alreetmiowdmuka]

Cheers for a response Andy yeah I've tried this and it works well.too add though an owd british seagul outboard has recently come into my possession and I was thinking a fin might help with that too

 

[Alreetmiowdmuka]

See here this guys modded a sail too his.this is an image off google so theirs no info but surely he's added a fin somewhere

 

[andibs]

Don't know if you would need a fin with an outboard although you might want to make sure that the bow was riding higher than the rest. The guy that's adapted his for sailing hasn't fitted a fin but if you look at the sides, he's got a Lee board on either side. Looks like he's made them out of an old paddle

Andy

 

[Alreetmiowdmuka]

Don't know if you would need a fin with an outboard although you might want to make sure that the bow was riding higher than the rest. The guy that's adapted his for sailing hasn't fitted a fin but if you look at the sides, he's got a Lee board on either side. Looks like he's made them out of an old paddle
Are these lee boards their too too help the dinghy cut through the water?

 

[Teepee]

You are looking for what is called a "Skeg". It's a fin that usually sits towards the back of the boat where the drag is reduced.

If the boat has no skeg socket, I might try to mackle a rudder that can lock in place. A fixed skeg can ground readily, much easier to launch in shallow water without one but they are worth the extra hassle.

My inflatable is a bit 'spinny' without the skeg.

 

[andibs]

Lee boards are to stop sideways drift and try and keep you going straight

 

[Alreetmiowdmuka]

You are looking for what is called a "Skeg". It's a fin that usually sits towards the back of the boat where the drag is reduced.

If the boat has no skeg socket, I might try to mackle a rudder that can lock in place. A fixed skeg can ground readily, much easier to launch in shallow water without one but they are worth the extra hassle.

My inflatable is a bit 'spinny' without the skeg.

What's the dimensions of the Skeg on your craft pal

 

[Alreetmiowdmuka]

Lee boards are to stop sideways drift and try and keep you going straight

Cheers pal would a fixed rudder or Skeg do the same job

 

[Teepee]

What's the dimensions of the Skeg on your craft pal

Quite small mate- 3/8" x 9" x6" roughly, in a fin shape. It does just enough on my 3 man.

 

[Nomad]

Cheers pal would a fixed rudder or Skeg do the same job

The lee boards (or centreboard, or daggerboard on sailing dinghies) need to be roughly where the centre off effort is on the sail. If you had a fixed rudder, implying something at the aft end, the centre of effort would be forward of the rudder, and cause the boat to rotate to leeward (the bow would constantly try to turn downwind).

 

[andibs]

The lee boards (or centreboard, or daggerboard on sailing dinghies) need to be roughly where the centre off effort is on the sail. If you had a fixed rudder, implying something at the aft end, the centre of effort would be forward of the rudder, and cause the boat to rotate to leeward (the bow would constantly try to turn downwind).

What he said

 

[Teepee]

I'm guessing OP just wants to paddle in straighter line without doing paddle ballet.

I found this kit on the bay; http://www.ebay.co.uk/itm/Tracking-...anoe-Sevylor-Tahiti-Bluefin-kit-/191152736448

Looks identical to the very basic clip on job on mine. V pricey for what it is but It has got £4 odd of glue. It will do the job and will save the expense of buying some Mcnett Seamgrip to do the job diy style with some polymorph sockets and a cut piece of plastic kitchen chopping board.

 

[Alreetmiowdmuka]

I'm guessing OP just wants to paddle in straighter line without doing paddle ballet.

I found this kit on the bay; http://www.ebay.co.uk/itm/Tracking-...anoe-Sevylor-Tahiti-Bluefin-kit-/191152736448

Looks identical to the very basic clip on job on mine. V pricey for what it is but It has got £4 odd of glue. It will do the job and will save the expense of buying some Mcnett Seamgrip to do the job diy style with some polymorph sockets and a cut piece of plastic kitchen chopping board.

That's the ticket right their teepee Cheersalot! N thanks everyone else for your in put

 

[Disruptive Pattern]

See here this guys modded a sail too his.this is an image off google so theirs no info but surely he's added a fin somewhere

The photo's from this site : http://www.sailboatstogo.com/catalog/DINGHY_RIG could give you some ideas.